Patent FR-1912-448915
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- Tech class CPC B64C11/16 Blades for propellers
- Inventor location:
Sources
- Original patent document and bibliography entry on espacenet
- Patent FR448915A on google patents
| Year filed | 1912 |
|---|---|
| Year granted | 1912 |
| Office | FR |
| Patent number | 448915 |
| Inventors | Josef Helldoerfer |
| Inventor country | DE |
| Inventor location | |
| Applicant person | Josef Helldoerfer |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Propulseur pour ballons, appareils volants, bateaux, traineaux et autres moyens de transport similaires |
| English title | Thruster for balloons, flying devices, boats, sleds and other similar means of transport |
| Tech fields | propulsion |
| Filing date | 1912-10-01 |
| Full specification filed date | |
| Application number | 448915D |
| Grant date | 1912-12-09 |
| Granted? | 1 |
| Publication date | 1913-02-13 |
| Supplementary to patent | |
| Related to aircraft? | 1 |
| Serial number | |
| Patent agent | H. Boettcher fils |
| Assigned to | |
| National tech categories | FR 6.2 |
| IPCs | IPC B64C11/16 |
| CPCs | CPC B64C11/16 |
| Family year | 1912 |
| First filing? | 1 |
| Cites these patents | |
| Citations from after 1930 | 0 |
| Application ID | 19267199 |
| INPADOC family ID | 5336687 |
| Number of text pages | 1 |
| Number of diagram pages | 1 |
| Number of figures | 3 |
| Number of claims | 1 |
